diff --git a/acorn-walk/dist/walk.d.ts b/acorn-walk/dist/walk.d.ts
index 00cc005f1..2d81f01c1 100644
--- a/acorn-walk/dist/walk.d.ts
+++ b/acorn-walk/dist/walk.d.ts
@@ -109,4 +109,6 @@ declare module "acorn-walk" {
   ): Found<TState> | undefined;
 
   export const findNodeAfter: typeof findNodeAround;
+
+  export const base: RecursiveVisitors<any>;
 }